Mitsubishi Galant (2004+). Manual - part 638

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-103

STEP 10. Check the harness for short circuit to ground 
between PCM connector B-22 terminal 112 and output 
shaft speed sensor connector B-107 terminal 2.

Q: Is the harness wire in good condition?

YES : Go to Step 11.
NO :  Repair or replace the harness wire.

AC306248AE

B-22 
(B)

CONNECTOR: B-22

PCM

AIR
CLEANER

JAE

94

98

107

103

112

91

100

109

101102

106

110

105

111

97

92

96

93

104

113

108

95

99

AC305353AC

CONNECTOR: B-107

BATTERY

B-107 (GR)

3

2

1

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-104

STEP 11. Measure the ground circuit for resistance at the 
output shaft speed sensor connector B-107.

(1) Disconnect connector B-107 from the speed sensor and 

measure at the harness side.

(2) Measure the resistance between terminal 1 and ground.

• The resistance should measure less than 2 ohms.

Q: Is the measured resistance less than 2 ohms?

YES : Go to Step 16.
NO :  Go to Step 12.

AC305353AC

CONNECTOR: B-107

BATTERY

B-107 (GR)

3

2

1

3 2 1

AC210663

B-107 HARNESS
CONNECTOR:
COMPONENT SIDE

AB

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-105

STEP 12. Measure the resistance at the PCM connector 
B-22 by using check harness special tool MB991923.

(1) Disconnect all the connectors from the PCM.

(2) Connect special tool MB991923 (check harness) between 

the PCM and the body-side harness connector.

(3) Turn the ignition switch to the "ON" position.

AC306248AE

B-22 
(B)

CONNECTOR: B-22

PCM

AIR
CLEANER

JAE

94

98

107

103

112

91

100

109

101102

106

110

105

111

97

92

96

93

104

113

108

95

99

AC209793AH

SPECIAL TOOL 23-PIN CONNECTOR
WITH RED TAPE
(PCM CONNECTOR B-22)

104

96

94

95

93 92 91

99 98 97

103 102 101 100

108 107 106 105

113 112 111 110 109

PCM

MB991923

BODY SIDE
HARNESS

B-22
(GR)

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-106

(4) Measure the resistance between terminal 113 and ground.

• The resistance should measure less than 2 ohms.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured resistance less than 2 ohms?

YES : Go to Step 13.
NO :  Go to Step 15.

STEP 13. Check PCM connector B-22 and output shaft 
speed sensor connector B-107 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.

Q: Are the connectors and terminals in good condition?

YES : Go to Step 14.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

AC210362

JAE

94

98

107

103

112

91

100

109

101

102

106

110

105

111

97

92

96

93

104

113

108

95

99

B-22 HARNESS
CONNECTOR:
COMPONENT SIDE

AC

AC306248AE

B-22 
(B)

CONNECTOR: B-22

PCM

AIR
CLEANER

JAE

94

98

107

103

112

91

100

109

101102

106

110

105

111

97

92

96

93

104

113

108

95

99

AC305353AC

CONNECTOR: B-107

BATTERY

B-107 (GR)

3

2

1